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Finding the Fourth Proportional to 564,399.60, 778,867.41 and 306,269.94

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Solution

The fourth proportional to 564,399.60, 778,867.41 and 306,269.94 is: 422,650.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,399.60 : 778,867.41 = 306,269.94 : x
  2. Step 2: Convert to fraction form
    564,399.60/778,867.41 = 306,269.94/x
  3. Step 3: Cross multiply
    564,399.60x = 778,867.41 × 306,269.94
  4. Step 4: Simplify right side
    564,399.60x = 238,543,678,997.92
  5. Step 5: Solve for x
    x = 238,543,678,997.92/564,399.60
  6. Step 6: Final answer
    x = 422,650.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.